Cutlass Supreme V6-3100 3.1L MFI VIN M (1994)
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Coolant: Service and Repair
DRAINING
NOTE: This procedure significantly increases the amount of used coolant and diluted hazardous waste.
1. Park the vehicle on a level surface.
2. Remove and clean coolant recovery reservoir.
3. Remove the radiator cap when the engine is cool by:
a. Slowly rotating the cap counterclockwise to detent. Do not press down while rotating pressure cap.
b. Wait until any residual pressure (indicated by a hissing sound) is relieved.
c. After all hissing stops, continue to rotate counterclockwise until the cap is removed.
IMPORTANT: Recover coolant and store in a used coolant holding tank and submit the used coolant for recycling on a regular basis. This
procedure significantly increases the amount of used coolant and diluted hazardous waste.
4. Place drain pan under vehicle to collect all drained coolant.
5. Open the radiator drain valve located at the bottom of the radiator tank. For procedures requiring the cooling system to be partially drained,
opening the radiator drain valve should provide sufficient draining and no further actions should be necessary.
6. Remove the thermostat housing cap and thermostat or open the air bleed vent(s).
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Open the air bleed vents on the thermostat housing and above water pump. The air bleed vents should be opened two to three turns.
7. Remove the engine block drains:
Engine Coolant Drain Plug ( Front )